Interesting results ..... In the end I bought one of these stainless clamps, as it was obvious i needed to clamp 57mm (and Lupolee did say get a wide one 😄). It just about fills the space between the two cans, and I think I got it tightened down pretty well.
However when I tried to start the bike at first it fired briefly but then just churned. My first thought was there must be a sensor in that area and I have crushed it. But I checked the shop manual and the O2 sensor is not in that clamp area. So back to the bike and churn it some more. Eventually it began spluttering then after a few more prods it took hold properly and ran for a couple of minutes at 2000rpm before eventually settling down at 1400rpm. This did NOT feel like the normal cold start sequence, and I am thinking that the ECU had adapted the fuelling to cope with leakage at that broken clamp and now I've fixed it, it has to relearn things. What do you think?
Mike